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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1948961
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www.findagrave.com/cgi-bin/fg.cgi?page=cr&CRid=2205901
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iowagravestones.org/cemetery_list.php?CID=3&cName=Harpers Ferry - aka Sandy Point (1 May 2013)
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www.sharylscabin.com/Allamakee/cemetery/SandyPoint2008.htm (23 Oct 2012)
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www.sharylscabin.com/Allamakee/cemetery/HarpersF.htm (23 Oct 2012)